PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7242207P004Insulator,washer

Lockheed Martin Corporation Div Rms · NSN 5970-01-138-4042 · FSC 5970 · No Item Name Available
Verified by PartsTable
NSN 5970-01-138-4042 — this item is cataloged by the U.S. Government under National Stock Number 5970-01-138-4042. Primary manufacturer part number: 7242207P004.
Features
  • Insulator,washer — FSC 5970
  • Material: MICA OVERALL
  • Style Designator: ROUND, FLAT
  • Inside Diameter: 0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
  • Outside Diameter: 0.965 INCHES MINIMUM AND 1.005 INCHES MAXIMUM IN
  • 3 verified cross-references
  • Primary manufacturer: Lockheed Martin Corporation Div Rms
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Mica Overall construction
General Description

The Insulator,washer, cataloged under National Stock Number 5970-01-138-4042, is classified within Federal Supply Class 5970 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Lockheed Martin Corporation Div Rms. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5970-01-138-4042
Primary Part Number7242207P004
Item NameInsulator,washer
FSC / FSG5970 / 59 — No Item Name Available
ManufacturerLockheed Martin Corporation Div Rms
StatusACTIVE
MaterialMICA OVERALL
Style DesignatorROUND, FLAT
Inside Diameter0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
Outside Diameter0.965 INCHES MINIMUM AND 1.005 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
2825-00-123-1643 INTERCHANGEABLE
Collar,thrust
2915-00-428-4346 INTERCHANGEABLE
Cover and Stud Subassembly
5975-00-981-0926105834 INTERCHANGEABLE
Cable,fle,ible No-6
General Dynamics Land Systems - Canadacorporation Div General Dynamics Mission Systems
5310-01-550-3683 INTERCHANGEABLE
Nut,self-Locking,hexagon
Cross-Reference Index
Part NumberManufacturer
7242207D Lockheed Martin Corporation Div Rms (USA)
10583-4 Columbia Chase Corp (USA)
7242207P004 PRIMARY Lockheed Martin Corporation Div Rms (USA)
Related Parts
2825-00-123-1643INTERCHANGEABLE
COLLAR,THRUST
2915-00-428-4346INTERCHANGEABLE
COVER AND STUD SUBASSEMBLY
5975-00-981-0926INTERCHANGEABLE
CABLE,FLE,IBLE NO-6
105834
5310-01-550-3683INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON

Frequently Asked Questions

What is NSN 5970-01-138-4042?

NSN 5970-01-138-4042 is a Insulator,washer, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5970 (No Item Name Available). Status: active.

What are the part numbers for NSN 5970-01-138-4042?

NSN 5970-01-138-4042 has 3 cross-referenced part numbers: 7242207D (Lockheed Martin Corporation Div Rms), 10583-4 (Columbia Chase Corp), 7242207P004 (Lockheed Martin Corporation Div Rms).

What NSN replaces 5970-01-138-4042?

There are 4 known substitutes for 5970-01-138-4042: 2825-00-123-1643, 2915-00-428-4346, 5975-00-981-0926 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7242207P004?

Key specifications for 7242207P004: Overall Height: 0.002 INCHES MINIMUM AND 0.003 INCHES MAXIMUM IN; Material: MICA OVERALL; Style Designator: ROUND, FLAT; Inside Diameter: 0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN. 5 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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